Diodes Incorporated PT7M8216B11XYEX

Overview

PT7M8216B11XYEX from Pericom Semiconductor is a 300mA, high-PSRR, low-noise LDO regulator with 2.85V fixed output voltage, 150mV dropout at 150mA, ±2% initial accuracy, and stable operation with 0.47µF ceramic capacitors - deployed in mobile RF power stages and camera sensor biasing where supply noise rejection and space-constrained layout are critical.

For engineers reviewing the PT7M8216B11XYEX datasheet, PT7M8216B11XYEX pinout, PT7M8216B11XYEX application, or PT7M8216B11XYEX equivalent, key selection criteria include guaranteed 300mA load capability under 1.7–5.5V input, 75dB PSRR at 1kHz, auto output discharge, thermal shutdown at 170°C, and compatibility with 0.8mm×0.8mm UDFN-4L packaging for ultra-dense portable designs.

Technical Context

The PT7M8216B11XYEX integrates a P-channel MOSFET pass element, internal reference, error amplifier with phase compensation, and EN-controlled logic to deliver stable 2.85V output across –40°C to +85°C ambient. Its architecture enables low-noise regulation without external compensation components.

It achieves 75dB ripple rejection at 1kHz using only 0.47µF X5R/X7R ceramic capacitors on input and output, and features active output discharge (50Ω typical) when EN is pulled low - eliminating hold-up voltage during power sequencing in multi-rail systems.

Key Specifications

Pinout & Package

PT7M8216B11XYEX is housed in a lead-free, green 0.8mm×0.8mm UDFN-4L package with wettable flanks, optimized for automated optical inspection (AOI) and high-density PCB assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with XC6219B282MR-G and RP111N282D-TR-F, PT7M8216B11XYEX delivers superior PSRR and integrated discharge functionality in the smallest footprint - making it optimal for RF-critical, space-constrained, and fast-sequencing portable designs where noise immunity and layout efficiency are non-negotiable.

Availability

PT7M8216B11XYEX is available at Aetrix Electronics and suitable for mobile RF front-end power, dual-camera sensor biasing, Bluetooth audio SoC core regulation, and wearable health monitor MCU supply requiring stable component supply, long-term lifecycle assurance, and traceable green packaging.

Supply support for PT7M8216B11XYEX includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Pericom Semiconductor (now part of Diodes Incorporated) specializes in high-performance interface, timing, and power management ICs for communications, computing, and consumer electronics.

PT7M8216 belongs to Pericom's precision LDO family designed specifically for noise-sensitive portable applications - emphasizing ultra-small packaging, high PSRR, and seamless integration into space-constrained, battery-powered systems.

FAQ

What is the minimum input voltage required for stable 2.85V output at 300mA load?

The PT7M8216B11XYEX requires VIN ≥ VOUT + V_DROP, where V_DROP is 150mV at 150mA but rises under full 300mA load. Based on datasheet curves and derating, minimum VIN is 3.05V to maintain regulation at 300mA and 25°C. At –40°C or +85°C, allow ≥3.15V for margin due to increased dropout and thermal effects.

Can the NC pin (pin 5) be left unconnected without affecting performance?

Yes - the NC pin is not internally bonded and has no electrical function. The datasheet explicitly states that leaving it open is acceptable, though connecting it to GND improves mechanical reliability and reduces EMI susceptibility in high-frequency environments. No performance degradation occurs in either configuration.

Does the auto output discharge feature activate during normal power-down sequencing?

Yes - the internal 50Ω discharge path engages automatically when the EN pin is driven LOW (≤0.3V), fully discharging VOUT to GND within ~1ms (typical). This eliminates residual voltage that could cause unintended wake-up or latch-up in downstream logic, and is integral to robust power sequencing in multi-rail portable systems.

Is the 0.47µF output capacitor requirement strict for stability, or can larger values be used?

The 0.47µF value is the minimum stable capacitance specified for X5R/X7R ceramics; larger values (e.g., 1µF–4.7µF) are permitted and improve transient response and PSRR, but do not degrade stability. Avoid NP0/C0G below 0.47µF or high-ESR capacitors (tantalum/electrolytic), which risk oscillation per the internal compensation design.